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Brain can heal from alcoholic damage | HealtyWorld

Brain can heal from alcoholic damage | HealtyWorld

In particular, new research has revealed that while the brain is able to recover from some of the damage caused by alcohol abuse, the longer alcoholics postpone sobriety the less likely their brains may be to regenerate.

The findings, published today (18 December 2006) in the online edition of the journal Brain, used sophisticated scanning technology and computer software to measure how brain volume, form and function changed over six to seven weeks of abstinence from alcohol in 15 alcohol dependent patients (ten men, five women).

The researchers from Germany, the UK, Switzerland and Italy measured the patients’ brain volume at the beginning of the study and again after about 38 days of sobriety, and they found that it had increased by an average of nearly two per cent during this time. In addition, levels of two chemicals, which are indicators for how well the brain’s nerve cells and nerve sheaths are constituted, rose significantly. The increase of the nerve cell marker correlated with the patients performing better in a test of attention and concentration. Only one patient seemed to continue to lose some brain volume, and this was also the patient who had been an alcoholic for the longest time.

The leader of the research, Dr Andreas Bartsch from the University of Wuerzburg, Germany, said: “The core message from this study is that, for alcoholics, abstinence pays off and enables the brain to regain some substance and to perform better. However, our research also provides evidence that the longer you drink excessively, the more you risk losing this capacity for regeneration. Therefore, alcoholics must not put off the time when they decide to seek help and stop drinking; the sooner they do it, the better.”

[...]

Dr Bartsch said: “After short-term sobriety of less than two months, we found that brain volume had increased by an average of nearly two per cent (1.82%), with a range of -0.19 to 4.32%.

[...]

“In addition, on average across all the patients, cerebellar choline levels increased by about 20%, while levels of NAA in the cerebellar and frontal region of the brain and frontal choline significantly increased by about 10%. Brain volume regeneration correlated with the percentages increase in choline, indicating that volume regain is driven primarily by rising choline levels, while the more the NAA recovered, the better the patients performed on the d2-test.”

There were no significant changes in the controls.

Dr Bartsch and his colleagues were confident that the increase in brain volume and form was not simply due to rehydration of the brain, as concentrations of choline and NAA increased even when water levels and other metabolites did not change significantly.

“Our results indicate that early brain recovery through abstinence does not simply reflect rehydration. Instead, the adult human brain, and particularly its white matter, seems to possess genuine capabilities for re-growth. Our findings show the ways that the brain can recover from the toxic insults of chronic alcoholism and substantiate the early measurable benefits of therapeutic sobriety. However, they also suggest that prolonged dependence on alcohol may limit rapid recovery from white matter brain injury.

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